feat: implement loadout management system, interactive pause menu, and weapon slot switching functionality

globals/loadout_manager.gd

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+extends Node
+
+const SAVE_PATH = "user://loadouts.json"
+
+var weapon_db = {
+	"none": {
+		"name": "None",
+		"category": "none",
+		"script": ""
+	},
+	"double_barrel_shotgun": {
+		"name": "Double Barrel Shotgun",
+		"category": "primary",
+		"script": "res://weapons/double_barrel_shotgun.gd"
+	}
+}
+
+var active_loadout_index: int = 0
+
+var loadouts: Array = []
+
+func _ready() -> void:
+	_ensure_default_loadouts()
+	load_loadouts()
+
+func _ensure_default_loadouts() -> void:
+	loadouts.clear()
+	for i in range(5):
+		loadouts.append({
+			"name": "Loadout " + str(i + 1),
+			"primary_1": "double_barrel_shotgun",
+			"primary_2": "none",
+			"special": "none"
+		})
+
+func get_active_loadout() -> Dictionary:
+	if active_loadout_index >= 0 and active_loadout_index < loadouts.size():
+		return loadouts[active_loadout_index]
+	return loadouts[0]
+
+func save_loadouts() -> void:
+	var save_data = {
+		"active_index": active_loadout_index,
+		"loadouts": loadouts
+	}
+	var json_string = JSON.stringify(save_data)
+	var file = FileAccess.open(SAVE_PATH, FileAccess.WRITE)
+	if file:
+		file.store_string(json_string)
+		file.close()
+
+func load_loadouts() -> void:
+	if FileAccess.file_exists(SAVE_PATH):
+		var file = FileAccess.open(SAVE_PATH, FileAccess.READ)
+		if file:
+			var json_string = file.get_as_text()
+			file.close()
+			
+			var json = JSON.new()
+			var error = json.parse(json_string)
+			if error == OK:
+				var data = json.get_data()
+				if data is Dictionary:
+					if data.has("active_index"):
+						active_loadout_index = data["active_index"]
+					if data.has("loadouts") and data["loadouts"] is Array:
+						var saved_loadouts = data["loadouts"]
+						# Overwrite defaults, up to 5
+						for i in range(min(5, saved_loadouts.size())):
+							var sl = saved_loadouts[i]
+							if sl is Dictionary:
+								if sl.has("name"): loadouts[i]["name"] = sl["name"]
+								if sl.has("primary_1"): loadouts[i]["primary_1"] = sl["primary_1"]
+								if sl.has("primary_2"): loadouts[i]["primary_2"] = sl["primary_2"]
+								if sl.has("special"): loadouts[i]["special"] = sl["special"]

globals/loadout_manager.gd.uid

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+uid://ck4n30620akl4